CN100508242C - Organic electroluminescence device - Google Patents
Organic electroluminescence device Download PDFInfo
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- CN100508242C CN100508242C CNB2006100037228A CN200610003722A CN100508242C CN 100508242 C CN100508242 C CN 100508242C CN B2006100037228 A CNB2006100037228 A CN B2006100037228A CN 200610003722 A CN200610003722 A CN 200610003722A CN 100508242 C CN100508242 C CN 100508242C
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- organic electroluminescence
- electroluminescence device
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- electron transfer
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- 238000005401 electroluminescence Methods 0.000 title claims abstract description 70
- 230000005540 biological transmission Effects 0.000 claims abstract description 23
- UJOBWOGCFQCDNV-UHFFFAOYSA-N 9H-carbazole Chemical compound C1=CC=C2C3=CC=CC=C3NC2=C1 UJOBWOGCFQCDNV-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000002347 injection Methods 0.000 claims abstract description 20
- 239000007924 injection Substances 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims description 20
- 230000027756 respiratory electron transport chain Effects 0.000 claims description 19
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 claims description 14
- 239000000758 substrate Substances 0.000 claims description 14
- 150000004985 diamines Chemical class 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- 239000004411 aluminium Substances 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- -1 fluorine hydrocarbon Chemical class 0.000 claims description 9
- 229910045601 alloy Inorganic materials 0.000 claims description 8
- 239000000956 alloy Substances 0.000 claims description 8
- RBTKNAXYKSUFRK-UHFFFAOYSA-N heliogen blue Chemical compound [Cu].[N-]1C2=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=NC([N-]1)=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=N2 RBTKNAXYKSUFRK-UHFFFAOYSA-N 0.000 claims description 8
- 235000010290 biphenyl Nutrition 0.000 claims description 7
- 239000004305 biphenyl Substances 0.000 claims description 7
- 150000003839 salts Chemical class 0.000 claims description 7
- 238000001704 evaporation Methods 0.000 claims description 6
- 230000008020 evaporation Effects 0.000 claims description 6
- 239000011777 magnesium Substances 0.000 claims description 5
- 150000004032 porphyrins Chemical class 0.000 claims description 5
- 150000001450 anions Chemical class 0.000 claims description 4
- 150000001768 cations Chemical class 0.000 claims description 4
- 150000004820 halides Chemical class 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 4
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical class N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- YJTKZCDBKVTVBY-UHFFFAOYSA-N 1,3-Diphenylbenzene Chemical group C1=CC=CC=C1C1=CC=CC(C=2C=CC=CC=2)=C1 YJTKZCDBKVTVBY-UHFFFAOYSA-N 0.000 claims description 3
- XSUNFLLNZQIJJG-UHFFFAOYSA-N 2-n-naphthalen-2-yl-1-n,1-n,2-n-triphenylbenzene-1,2-diamine Chemical compound C1=CC=CC=C1N(C=1C(=CC=CC=1)N(C=1C=CC=CC=1)C=1C=C2C=CC=CC2=CC=1)C1=CC=CC=C1 XSUNFLLNZQIJJG-UHFFFAOYSA-N 0.000 claims description 3
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 claims description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical group [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 3
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 claims description 3
- NPYPAHLBTDXSSS-UHFFFAOYSA-N Potassium ion Chemical compound [K+] NPYPAHLBTDXSSS-UHFFFAOYSA-N 0.000 claims description 3
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 claims description 3
- 229910001422 barium ion Inorganic materials 0.000 claims description 3
- NCMHKCKGHRPLCM-UHFFFAOYSA-N caesium(1+) Chemical compound [Cs+] NCMHKCKGHRPLCM-UHFFFAOYSA-N 0.000 claims description 3
- 239000011575 calcium Substances 0.000 claims description 3
- 229910001424 calcium ion Inorganic materials 0.000 claims description 3
- 229910001416 lithium ion Inorganic materials 0.000 claims description 3
- 229910001425 magnesium ion Inorganic materials 0.000 claims description 3
- 229910001415 sodium ion Inorganic materials 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 239000004215 Carbon black (E152) Substances 0.000 claims description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- 239000003513 alkali Substances 0.000 claims description 2
- 229910000272 alkali metal oxide Inorganic materials 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 229910052731 fluorine Inorganic materials 0.000 claims description 2
- 239000011737 fluorine Substances 0.000 claims description 2
- 229930195733 hydrocarbon Natural products 0.000 claims description 2
- 229910052744 lithium Inorganic materials 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- RZZQJFHQKOPJFD-UHFFFAOYSA-N [O-2].[Zn+2].[O-2].[In+3].[Sn+4] Chemical group [O-2].[Zn+2].[O-2].[In+3].[Sn+4] RZZQJFHQKOPJFD-UHFFFAOYSA-N 0.000 claims 1
- 229910000288 alkali metal carbonate Inorganic materials 0.000 claims 1
- 229910001414 potassium ion Inorganic materials 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract 1
- XJHCXCQVJFPJIK-UHFFFAOYSA-M caesium fluoride Chemical compound [F-].[Cs+] XJHCXCQVJFPJIK-UHFFFAOYSA-M 0.000 description 16
- 230000000903 blocking effect Effects 0.000 description 12
- MRNHPUHPBOKKQT-UHFFFAOYSA-N indium;tin;hydrate Chemical compound O.[In].[Sn] MRNHPUHPBOKKQT-UHFFFAOYSA-N 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 6
- UFVXQDWNSAGPHN-UHFFFAOYSA-K bis[(2-methylquinolin-8-yl)oxy]-(4-phenylphenoxy)alumane Chemical compound [Al+3].C1=CC=C([O-])C2=NC(C)=CC=C21.C1=CC=C([O-])C2=NC(C)=CC=C21.C1=CC([O-])=CC=C1C1=CC=CC=C1 UFVXQDWNSAGPHN-UHFFFAOYSA-K 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 5
- LTUJKAYZIMMJEP-UHFFFAOYSA-N 9-[4-(4-carbazol-9-yl-2-methylphenyl)-3-methylphenyl]carbazole Chemical compound C12=CC=CC=C2C2=CC=CC=C2N1C1=CC=C(C=2C(=CC(=CC=2)N2C3=CC=CC=C3C3=CC=CC=C32)C)C(C)=C1 LTUJKAYZIMMJEP-UHFFFAOYSA-N 0.000 description 4
- VFUDMQLBKNMONU-UHFFFAOYSA-N 9-[4-(4-carbazol-9-ylphenyl)phenyl]carbazole Chemical group C12=CC=CC=C2C2=CC=CC=C2N1C1=CC=C(C=2C=CC(=CC=2)N2C3=CC=CC=C3C3=CC=CC=C32)C=C1 VFUDMQLBKNMONU-UHFFFAOYSA-N 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical group 0.000 description 3
- TVIVIEFSHFOWTE-UHFFFAOYSA-K tri(quinolin-8-yloxy)alumane Chemical compound [Al+3].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 TVIVIEFSHFOWTE-UHFFFAOYSA-K 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- USDJGQLNFPZEON-UHFFFAOYSA-N [[4,6-bis(hydroxymethylamino)-1,3,5-triazin-2-yl]amino]methanol Chemical compound OCNC1=NC(NCO)=NC(NCO)=N1 USDJGQLNFPZEON-UHFFFAOYSA-N 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- DNTVTBIKSZRANH-UHFFFAOYSA-N 4-(4-aminophenyl)-3-(3-methylphenyl)aniline Chemical compound CC1=CC=CC(C=2C(=CC=C(N)C=2)C=2C=CC(N)=CC=2)=C1 DNTVTBIKSZRANH-UHFFFAOYSA-N 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 1
- 229910004261 CaF 2 Inorganic materials 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 229910006404 SnO 2 Inorganic materials 0.000 description 1
- 239000007983 Tris buffer Substances 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
- NWAIGJYBQQYSPW-UHFFFAOYSA-N azanylidyneindigane Chemical compound [In]#N NWAIGJYBQQYSPW-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 229940006460 bromide ion Drugs 0.000 description 1
- FJDQFPXHSGXQBY-UHFFFAOYSA-L caesium carbonate Chemical compound [Cs+].[Cs+].[O-]C([O-])=O FJDQFPXHSGXQBY-UHFFFAOYSA-L 0.000 description 1
- 229910000024 caesium carbonate Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- AKUNKIJLSDQFLS-UHFFFAOYSA-M dicesium;hydroxide Chemical compound [OH-].[Cs+].[Cs+] AKUNKIJLSDQFLS-UHFFFAOYSA-M 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-M iodide Chemical compound [I-] XMBWDFGMSWQBCA-UHFFFAOYSA-M 0.000 description 1
- 229940006461 iodide ion Drugs 0.000 description 1
- 229910001947 lithium oxide Inorganic materials 0.000 description 1
- 229920003240 metallophthalocyanine polymer Polymers 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 1
- DCZNSJVFOQPSRV-UHFFFAOYSA-N n,n-diphenyl-4-[4-(n-phenylanilino)phenyl]aniline Chemical compound C1=CC=CC=C1N(C=1C=CC(=CC=1)C=1C=CC(=CC=1)N(C=1C=CC=CC=1)C=1C=CC=CC=1)C1=CC=CC=C1 DCZNSJVFOQPSRV-UHFFFAOYSA-N 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910001948 sodium oxide Inorganic materials 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
Images
Abstract
This invention relates to one organic electroluminescence device, which comprises the following parts: baseboard, first electrode layer, hollow injection layer, hollow transmission layer, light layer, electro transmission layer, electro injection layer and the second electrode layer, wherein, The first electrode layer is formed on the baseboard; The hollow injection layer is formed on the first electrode layer; The hollow transmission layer is formed on the injection layer and The light layer is formed on the hollow transmission layer; The electron transmission layer is formed on the light layer with carbazole deriving and n type substance; The electron injection layer is formed on the electron transmission layer and The second electrode layer is formed on the electron injection layer.
Description
Technical field
The present invention relates to a kind of organic electroluminescence device, particularly a kind of organic electroluminescence device that possesses the hole barrier ability.
Prior art
Organic electroluminescence device is studied ardently and is discussed in Display Technique recently, it can be in order to make the display of slimming, and display-LCD than another kind of slimming, organic electroluminescence device is a kind of self luminous device, LCD then needs backlight, so the easier color rendition degree of satisfying and closing of reaching of organic electroluminescence device.
See also Fig. 1 a, Fig. 1 a is the side generalized section of existing organic electroluminescence device 10.Organic electroluminescence device 10 comprises substrate 11, anode layer 13, hole injection layer 15, hole transmission layer 17, luminescent layer 19, electron transfer layer 21, electron injecting layer 23 and cathode layer 25 usually in regular turn.
Electronics can make that combining of luminescent layer 19 electric energy is converted into luminous energy with the hole, and the light 29 that is discharged can be penetrated by substrate 11 belows of organic electroluminescence device 10.Yet, for this kind organic electroluminescence device 10,, make electronics can't in luminescent layer 19, effectively combine with the hole because the hole can penetrating electrons transport layer 21 be moved toward cathode layer 25 directions, therefore cause the loss of energy.
See also Fig. 1 b, Fig. 1 b is the side generalized section of existing organic electroluminescence device 20.Organic electroluminescence device 20 shown in Fig. 1 b is with organic electroluminescence device 10 difference shown in Fig. 1 a: organic electroluminescence device 20 also comprises hole blocking layer 22, and is arranged between luminescent layer 19 and the electron transfer layer 21.This purpose be hole blocking layer 22 effectively blocking hole move toward cathode direction, and make electronics can in luminescent layer 19, effectively combine, so just can improve the organic electroluminescence device 10 existing problems of Fig. 1 a with the hole.Yet, though can improve the organic electroluminescence device 10 existing energy loss problems of Fig. 1 a for organic electroluminescence device 20, many production processes of hole blocking layer 22 on processing procedure, thus increased the complexity of processing procedure itself.
Therefore, main purpose of the present invention is to provide a kind of organic electroluminescence device, except the complexity that can reduce processing procedure itself, can also improve luminosity, efficient further and reach the fuller color rendition degree that closes.
Summary of the invention
Main purpose of the present invention is to provide a kind of organic electroluminescence device that improves luminosity, efficient and color rendition degree that has.
Another object of the present invention is to reduce the complexity of organic electroluminescence device processing procedure itself.
The invention provides a kind of organic electroluminescence device, comprise substrate, first electrode layer, hole injection layer, hole transmission layer, luminescent layer, electron transfer layer, electron injecting layer and the second electrode lay in regular turn.And with the substrate is the bottom, is formed in regular turn on the substrate, and the second electrode lay is formed on the top of substrate in addition.Wherein electron transfer layer comprises carbazole derivates and n type alloy.
Can be further understood by the following detailed description and accompanying drawings about the advantages and spirit of the present invention.
Description of drawings
By following detailed description also in conjunction with the accompanying drawings, can understand the plurality of advantages of foregoing and the present invention easily, wherein:
Fig. 1 a is the side generalized section of existing organic electroluminescence device 10;
Fig. 1 b is the side generalized section of existing organic electroluminescence device 20;
Fig. 2 is the side generalized section of organic electroluminescence device 30 of the present invention;
Fig. 3 a to Fig. 3 d is the organic electroluminescence device 20 and the comparison diagram of organic electroluminescence device of the present invention 30 on every usefulness shown in Figure 2 of Fig. 1 b;
Fig. 4 is the organic electroluminescence device 20 and the comparison diagram of organic electroluminescence device of the present invention 30 on usefulness shown in Figure 2 of Fig. 1 b; And
Fig. 5 is the organic electroluminescence device 20 and the comparison diagram of organic electroluminescence device of the present invention 30 on usefulness shown in Figure 2 of Fig. 1 b.
Description of reference numerals
Organic electroluminescence device: 10,20,30 substrates: 11,31
Anode layer: 13 hole injection layers: 15,35
Hole transmission layer: 17,37 luminescent layers: 19,39
Electron transfer layer: 21,41 electron injecting layers: 23,43
Cathode layer: 25 light: 29,49
Hole blocking layer: 22 first electrodes: 33
Second electrode: 45
Embodiment
Please refer to Fig. 2, Fig. 2 is the side generalized section of organic electroluminescence device 30 of the present invention.When being manufactured with organic electroluminescence devices 30, at first provide substrate 31.Then, first electrode layer 33 is formed on the substrate 31.First electrode layer 33 is an anode layer, and the material of itself is the oxide with light transmission features.This oxide be tin indium oxide (indium tin oxide, ITO), azo (Azo), zinc oxide (ZnO), indium nitride (InN) or tin ash (SnO
2) wait material, and be formed on the substrate 31 with sputtering method.
Afterwards, hole injection layer 35 is formed on first electrode layer 33.The material of hole injection layer 35 is selected from diamines (p-dopeddiamine) derivative that fluorine hydrocarbon polymer, porphyrin (porphyrin) derivative and p type mix, and is formed on first electrode layer 33 with evaporation or sputtering way.Wherein derivatives of porphyrin is metal phthalocyanine (metallophthalocyanine) derivative, and metal phthalocyanine derivative can be copper phthalocyanine (copper phthalocyanice).Then, hole transmission layer 37 is formed on the hole injection layer 35.The material of hole transmission layer is diamines (diamine) derivative, wherein diamine derivative is selected from N, N '-diphenyl-N, N '-two (1-naphthyl)-1,1 '-xenyl-4; 4 "-diamines (N, N '-diphenyl-N, N '-bis (1-naphthyl)-1,1 '-biphenyl-4,4 "-diamine, NPB) compound; triphenyldiamine (N; N '-diphenyl-N; N '-two (3-aminomethyl phenyl)-1,1 '-xenyl-4,4 '-diamines) (N; N '-diphenyl-N; N '-di (3-methylphenyl)-1,1 '-biphenyl-4,4 '-diamine, TPD) compound, 4,4 ', 4 "-three (N-(2-naphthyl)-N-phenyl-amino)-triphenylamine (4,4 '; 4 ＂-tris (N-(2-naphthyl)-N-phenyl-amino)-triphenylamine; 2T-NATA) compound; N, N '-diphenyl-N, N '-two (1-naphthyl)-1; 1 '-xenyl-4; 4 "-diamine derivative (NPB), N, N '-diphenyl-N, N '-two (3-aminomethyl phenyl)-1,1 '-xenyl-4,4 '-diamine derivative (TPD) and 2T-NATA derivative.And hole transmission layer 37 has thickness, thickness between
Extremely
Between.
Afterwards, luminescent layer 39 is formed on the hole transmission layer 37.The material of luminescent layer 39 can use trimethylol melamine (trimethylol melamine, TMM), 2,2 '-dimethyl-4,4 '-N, N '-two carbazyl biphenyl (2,2 '-dimethyl-4,4 '-N, N '-dicarbazole-biphenyl; CDBP), two (2-methyl-8-quinolyl)-4-(phenylphenol)-aluminium (Bis-(2-methyl-8-quinolinolate)-4-(phenylphenolato)-aluminium, BAlq), material such as RD07, (Ir-pytz), GD33, and can it be formed on the hole transmission layer 37 by modes such as vacuum evaporation, ionization evaporation, organic separated time evaporations.Wherein luminescent layer 39 discharges light 49 with the phosphorescence form.In addition, luminescent layer 39 has thickness, thickness between
Extremely
Between.
In addition, electron transfer layer 41 is formed on the luminescent layer 39.The material of electron transfer layer 41 comprises carbazole derivates (carbazole derivatives) and n type (n-type) alloy at least, and ratio between the two is between 1:99～99:1, and can it be formed on the luminescent layer 39 by the evaporation mode.Carbazole derivates is selected from 4,4 '-N, N '-two carbazyl biphenyl (4,4 '-N, N '-dicarbazole-biphenyl; CBP), 2,2 '-dimethyl-4,4 '-N, N '-two carbazyl biphenyl (2,2 '-dimethyl-4,4 '-N, N '-dicarbazole-biphenyl; CDBP), 9-ethyl-3 (triphenyl silicyl) carbazole (9-ethyl-3 (triphenylsilyl) carbazole); N type alloy is metal oxide or organic metal salt (organic metal salt).Wherein, the cation of metal oxide (cation) is selected from lithium ion (Li
+), sodium ion (Na
+), potassium ion (K
+), cesium ion (Cs
+), magnesium ion (Mg
2+), calcium ion (Ca
2+) and barium ions (Ba
2+), and the anion of this metal oxide (anion) is selected from oxonium ion (O
2-), fluorine ion (F
-), chloride ion (Cl
-), bromide ion (Br
-), iodide ion (I
-), carbanion (CO
3 2-), nitrate ion (NO
3 -).The cation of organic metal salt is selected from lithium ion (Li
+), sodium ion (Na
+), potassium ion (K
+), cesium ion (Cs
+), magnesium ion (Mg
2+), calcium ion (Ca
2+) and barium ions (Ba
2+), and the anion of organic metal salt is selected from aliphat and the aromatic organic anion of carbon number below 30.
Then, on electron transfer layer 41, form electron injecting layer 43.The material of electron injecting layer 43 is alkali halide (as: lithium fluoride (LiF) compound, cesium fluoride (CsF) compound, sodium fluoride (NaF) compound), alkaline-earth halide (as: calcirm-fluoride (CaF
2) compound), alkali metal oxide (as: lithia (Li
2O) oxide, cesium oxide (Cs
2O) oxide, sodium oxide molybdena (Na
2Compound) or metal carbonate (as: sodium carbonate (Na O)
2CO
3) oxide, lithium carbonate (Li
2CO
3) compound, cesium carbonate (Cs
2CO
3) oxide), and can be formed on the electron transfer layer 41 by hot vapour deposition method.In addition, electron injecting layer 43 has thickness, thickness between
Extremely
Between.
At last, on electron injecting layer 43, form the second electrode lay 45.The second electrode lay 45 is a cathode layer, and is the aluminum metal material with reflection characteristic, and is formed on the electron injecting layer 43 with sputter or evaporation mode.In addition, have the metal material of reflection characteristic for other, as: aluminium, magnesium, lithium or alloy etc. also can be used for the second electrode lay 45.
The structure of comprehensive above-mentioned organic electroluminescence device 30 and manufacture method, organic electroluminescence device 20 (shown in Fig. 1 b) with respect to prior art, can blocking hole move because the material of electron transfer layer 41 of the present invention has had enough energy levels, therefore do not need extra hole blocking layer 22 (shown in Fig. 1 b) moving with blocking hole toward the direction of second electrode 45.Owing to do not need extra hole blocking layer 22 (shown in Fig. 1 b), therefore can reduce the complexity of processing procedure itself.Than organic electroluminescence device 10 (as shown in Figure 1a), the present invention has improved the existing hole of organic electroluminescence device 10 (as shown in Figure 1a) and has moved the energy loss problem that is caused, and does not need hole blocking layer 22 (shown in Fig. 1 b) in addition.
In addition, organic electroluminescence device 30 of the present invention is except above-mentioned advantage, on luminosity, luminous efficiency and color rendition degree, also be significantly improved, below three examples by organic electroluminescence device 30 blue light that inspires, green glow and ruddiness describe one by one.
With the blue light is example, sees also Fig. 3 a to Fig. 3 d, and Fig. 3 a to Fig. 3 d is the organic electroluminescence device 20 and the comparison diagram of organic electroluminescence device of the present invention 30 on every usefulness shown in Figure 2 of Fig. 1 b.Comprise anode layer 13, hole injection layer 15, hole transmission layer 17, luminescent layer 19, hole blocking layer 22, electron transfer layer 21, electron injecting layer 23 and cathode layer 25 in regular turn for existing organic electroluminescence device 20, wherein the formation of each layer material is tin indium oxide (ITO)/copper phthalocyanine (CuPC)/diamine derivative (NPB)/blue EML/BAlq/8-hydroxyquinoline aluminum (Alq)/lithium fluoride (LiF)/aluminium (Al) in regular turn; Organic electroluminescence device 20 of the present invention comprises first electrode layer 33, hole injection layer 35, hole transmission layer 37, luminescent layer 39, electron transfer layer 41, hole injection layer 43 and cathode layer 25 in regular turn, wherein the formation of each layer material is tin indium oxide (ITO)/copper phthalocyanine (CuPC)/diamine derivative (MPB)/blue EML/CDBP:30% cesium fluoride (CsF)/lithium fluoride (LiF)/aluminium (Al) in regular turn.Shown in Fig. 3 a to Fig. 3 d, mark A refers to the usefulness that existing organic electroluminescence device 20 is produced; Mark B refers to the usefulness that organic electroluminescence device 30 of the present invention is produced.Fig. 3 a is current density (current density) value that is produced under the different voltages; Fig. 3 b is luminous output (yield) value that is produced under the different voltages; Fig. 3 c is briliancy (luminance) value that is produced under the different voltages; Fig. 3 d is under the different voltages, and blue light is positioned at the situation of cie color coordinate y axle.Shown in Fig. 3 a, Fig. 3 b and Fig. 3 c, device 30 of the present invention obviously has preferable luminous efficiency and luminosity with respect to existing device 20.Shown in Fig. 3 d, for cie color coordinate y axle, the value of y axle is low more, represents the blue light degree of saturation high more.Therefore, device 30 of the present invention obviously has preferable light source degree of saturation with respect to existing device 20.
With the green glow is example, sees also Fig. 4, and Fig. 4 is the organic electroluminescence device 20 and the comparison diagram of organic electroluminescence device of the present invention 30 on usefulness shown in Figure 2 of Fig. 1 b.Identical with each layer structure that with the blue light is example for device 20,30 structures that comprised, wherein the formation material of device 20 is tin indium oxide (ITO)/copper phthalocyanine (CuPC)/diamine derivative (NPB)/green glow EML/BAlq/8-hydroxyquinoline aluminum (Alq)/lithium fluoride (LiF)/aluminium (Al) in regular turn; The formation material of device 30 is tin indium oxide (ITO)/copper phthalocyanine (CuPC)/diamine derivative (NPB)/green glow EML/CDBP:20% cesium fluoride (CsF)/lithium fluoride (LiF)/aluminium (Al) in regular turn, as shown in Figure 4, mark A refers to the usefulness that existing organic electroluminescence device 20 is produced; Mark B refers to the usefulness that organic electroluminescence device 30 of the present invention is produced.The current density value of Fig. 4 for being produced under the different voltages.By shown in Figure 4, device 30 of the present invention is with respect to existing device 20, obviously has preferable and luminosity.
With ruddiness is example, sees also Fig. 5, and Fig. 5 is the organic electroluminescence device 20 and the comparison diagram of organic electroluminescence device of the present invention 30 on usefulness shown in Figure 2 of Fig. 1 b.Identical with each layer structure that with the blue light is example for device 20,30 structures that comprised, wherein the formation material of device 20 is tin indium oxide (ITO)/copper phthalocyanine (CuPC)/diamine derivative (NPB)/red EML/BAlq/8-hydroxyquinoline aluminum (Alq)/lithium fluoride (LiF)/aluminium (Al) in regular turn; The formation material of device 30 is tin indium oxide (ITO)/copper phthalocyanine (CuPC)/diamine derivative (NPB)/red EML/CBP:20% cesium fluoride (CsF)/lithium fluoride (LiF)/aluminium (Al) in regular turn.As shown in Figure 5, mark A refers to the usefulness that existing organic electroluminescence device 20 is produced; Mark B refers to the usefulness that organic electroluminescence device 30 of the present invention is produced.The luminous yield values of Fig. 5 for being produced under the different luminometer numbers.By shown in Figure 5, device 30 of the present invention obviously has preferable luminous efficiency and luminosity with respect to existing device 20.
Organic electroluminescence device of the present invention does not need extra hole blocking layer, just can stop the direction of past second electrode in hole to move effectively, improves the problem of energy loss.Therefore, help to reduce the complexity of processing procedure itself.In addition, organic electroluminescence device of the present invention for luminosity, luminous efficiency and color rendition degree, also improves significantly, and will further help to improve the application of organic electroluminescence device.
Though the present invention illustrates as above with preferred embodiment, so it is not to only limit to the foregoing description in order to limit the present invention's spirit with the invention entity.For those skilled in the art, should easily understand and utilize other device or mode to produce identical effect.Therefore, the modification of being done in not breaking away from spirit of the present invention and scope all should be included in the scope of claims.
Claims (13)
1. organic electroluminescence device comprises at least:
Substrate;
Be formed on first electrode layer on the substrate;
Be formed on the hole injection layer on first electrode layer;
Be formed on the hole transmission layer on the hole injection layer;
Be formed on the luminescent layer on the hole transmission layer;
Be formed on the electron transfer layer on the luminescent layer, this electron transfer layer comprises carbazole derivates and n type alloy at least, wherein said carbazole derivates is selected from 4,4 '-N, N '-two carbazyl biphenyl, 2,2 '-dimethyl-4,4 '-N, N '-two carbazyl biphenyl, 9-ethyl-3 (triphenyl silicyl) carbazole;
Be formed on the electron injecting layer on the electron transfer layer; And
Be formed on the second electrode lay on the electron injecting layer.
2. organic electroluminescence device as claimed in claim 1, the material of wherein said hole injection layer are selected from the diamine derivative that fluorine hydrocarbon polymer, derivatives of porphyrin and p type mix.
3. organic electroluminescence device as claimed in claim 2, wherein said derivatives of porphyrin are metal phthalocyanine derivative.
4. organic electroluminescence device as claimed in claim 3, wherein said metal phthalocyanine derivative are copper phthalocyanine.
5. organic electroluminescence device as claimed in claim 1, the material of wherein said hole transmission layer are diamine derivative.
6. organic electroluminescence device as claimed in claim 2, wherein said diamine derivative is selected from N, N '-diphenyl-N, N '-two (1-naphthyl)-1,1 '-xenyl-4; 4 "-diamine compound and derivative thereof, N, N '-diphenyl-N, N '-two (3-aminomethyl phenyl)-1,1 '-xenyl-4,4 '-diamines and derivative thereof, 4,4 ', 4 "-three (N-(2-naphthyl)-N-phenyl-amino)-triphenylamine and derivatives thereof.
7. organic electroluminescence device as claimed in claim 1, wherein said n type alloy is an organic metal salt, the cation of described organic metal salt is selected from lithium ion Li
+, sodium ion Na
+, potassium ion K
+, cesium ion Cs
+, magnesium ion Mg
2+, calcium ion Ca
2+And barium ions Ba
2+, and the anion of this organic metal salt is selected from aliphat and the aromatic organic anion of carbon number below 30.
8. organic electroluminescence device as claimed in claim 1, the material of wherein said electron injecting layer are alkali halide, alkaline-earth halide, alkali metal oxide or metal carbonate.
9. organic electroluminescence device as claimed in claim 1, the material of wherein said first electrode layer are the oxide with light transmission features, and this oxide is tin indium oxide zinc oxide or tin ash.
10. organic electroluminescence device as claimed in claim 1, the material of wherein said the second electrode lay are the metal material of reflection characteristic, and described metal material is aluminium, magnesium, lithium or its alloy.
11. organic electroluminescence device as claimed in claim 1, wherein said luminescent layer discharges light with the phosphorescence form.
12. the manufacture method of an organic electroluminescence device comprises in regular turn at least:
Substrate is provided;
On substrate, form first electrode;
On first electrode, form hole injection layer;
On hole injection layer, form hole transmission layer;
On hole transmission layer, form luminescent layer;
On luminescent layer, form electron transfer layer, this electron transfer layer comprises carbazole derivates and n type alloy, wherein said carbazole derivates is selected from 4,4 '-N, N '-two carbazyl biphenyl, 2,2 '-dimethyl-4,4 '-N, N '-two carbazyl biphenyl, 9-ethyl-3 (triphenyl silicyl) carbazole;
On electron transfer layer, form electron injecting layer; And
On electron injecting layer, form the second electrode lay.
13. manufacture method as claimed in claim 12, wherein said electron transfer layer is formed on the described luminescent layer in the evaporation mode.
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| CNB2006100037228A CN100508242C (en) | 2006-02-06 | 2006-02-06 | Organic electroluminescence device |
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|---|---|---|---|
| CNB2006100037228A CN100508242C (en) | 2006-02-06 | 2006-02-06 | Organic electroluminescence device |
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| CN100508242C true CN100508242C (en) | 2009-07-01 |
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| TWI479947B (en) * | 2008-01-18 | 2015-04-01 | Lg Chemical Ltd | Organic light emitting device and method for manufacturing the same |
| CN102453234B (en) * | 2010-10-28 | 2013-11-27 | 海洋王照明科技股份有限公司 | Metalloporphyrin-thienothiadiazole organic semiconductor material and preparation method and application thereof |
| CN102453232B (en) * | 2010-10-28 | 2013-11-27 | 海洋王照明科技股份有限公司 | Metalloporphyrin-pyrrolopyrrole organic semiconductor material and preparation method and application thereof |
| CN102453233B (en) * | 2010-10-28 | 2013-10-02 | 海洋王照明科技股份有限公司 | Organic semiconductor material containing metalloporphyrin-triphenylamine and preparation method and application thereof |
| CN103165814A (en) * | 2013-03-21 | 2013-06-19 | 北京大学 | Organic photovoltaic device based on calcium halide cathode buffer layer and preparation method of organic photovoltaic device |
| CN111384247B (en) * | 2018-12-27 | 2021-05-28 | Tcl科技集团股份有限公司 | Quantum dot light-emitting diode and preparation method thereof |
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